By using a specially crafted HTTP request, the first layer of authentication for the invoker servlets deployed by httpha-invoker can be bypassed, as the access restrictions only apply for GET and POST. Due to the second layer of authentication provided by the security interceptor, there is no way to directly exploit this flaw. If a user misconfigured the security interceptor or inadvertently disabled it, this flaw would be exploitable.
The fix is to remove the verb-specific <http-method> elements from web.xml. This issue is a regression of CVE-2010-0738.